How to Lay Laminate Flooring: A Complete DIY Guide for UK Homes

Laminate flooring remains one of the most popular DIY upgrades in UK homes — and for good reason. A decent quality floor can transform a tired room in a weekend, costs a fraction of solid wood, and is genuinely manageable for someone who has never laid a floor before. This guide covers everything from choosing the right product to fitting the final skirting board cover strip.

Choosing Your Laminate

Laminate is rated by its AC (Abrasion Class) score, which runs from AC1 to AC6. For residential use, you want AC3 or AC4 as a minimum. AC3 is fine for bedrooms and living rooms with moderate traffic; AC4 handles hallways and busy family rooms. AC2 products from budget ranges are often too thin and will wear through in high-traffic areas within a few years.

Thickness matters too. Aim for 8mm minimum, ideally 10–12mm. Thinner boards flex underfoot and sound hollow. At B&Q and Wickes you'll typically find 8mm boards from £8–12/m², while premium 12mm options from brands like Pergo, Quick-Step, or Balterio run £20–35/m². For a 20m² room, budget materials will cost £160–240; mid-range around £400–600.

Check the AC rating and warranty carefully. A 25-year warranty on a cheap AC2 board is worth very little if the surface layer is paper-thin. Look at the wear layer thickness in the spec sheet, not just the headline warranty.

Tools and Materials You'll Need

• Tape measure and pencil
• Jigsaw or pull saw (a jigsaw makes curves and pipe cutouts far easier)
• Mitre box if cutting by hand
• Tapping block and pull bar (or a combined laminate fitting kit from Screwfix, around £8)
• Rubber mallet
• Spacers (5–10mm — use offcuts or buy a pack)
• Underlay
• Knee pads (you'll thank yourself by midday)

Preparing the Subfloor

This is where most DIYers cut corners and regret it. Laminate is a floating floor — it doesn't attach to the subfloor — but it amplifies every imperfection underneath it. The subfloor must be:

• Dry: Check with a damp meter. Readings above 75% RH in concrete are a problem. A DPM (damp proof membrane) under the underlay won't fix a serious damp issue — it just delays it.
• Flat: No more than 3mm deviation over a 1.8m straight edge. Fill dips with floor levelling compound (Ardex or similar); grind down high spots. This step genuinely matters.
• Clean: Sweep and vacuum thoroughly. Grit under a floating floor is a recipe for creaking.

If you're laying over existing tiles that are firmly bonded, you can lay directly on top — provided the overall floor height won't cause problems at doorways. Tiles that sound hollow or are lifting must come up first.

Fitting the Underlay

Nearly all laminate requires a separate underlay — check whether yours includes a pre-attached foam layer. Standard options:

• Basic foam (2–3mm): Cheap at £1–2/m². Fine for ground floor over concrete but provides minimal sound insulation.
• Combination underlay with built-in DPM: The most popular choice for ground floors. Around £3–5/m².
• Acoustic underlay: Necessary in flats and upper storeys — Building Regs Part E requires a minimum impact sound reduction between floors in new builds and conversions. Acoustic underlay (5mm+, often with a rubber or cork layer) costs £5–10/m².

Lay the underlay with the DPM face down (if applicable), butt the edges together without overlapping, and tape the joins. Don't fold it up the walls — cut it to the edge of the room. Overlapping underlay at joins creates lumps that crack board joints over time.

Laying the First Row

Start against the straightest, most visible wall — usually the one opposite the door. Work left to right if you're right-handed.

Place 8–10mm spacers against the wall. This expansion gap is essential: laminate expands and contracts with temperature and humidity changes. Without the gap, boards will buckle in summer. The gap is hidden by the skirting board or cover strip at the end, so don't worry about its appearance.

Most modern laminate uses a click-lock system — angle the tongue into the groove of the previous board and push down until it clicks. Avoid hitting boards directly with the mallet; always use a tapping block on the long edge and a pull bar on the short edge when fitting boards near walls.

Start the first row with a full board if possible. If the room isn't square (very common in UK houses), you may need to scribe the first row to the wall rather than relying on the expansion gap to compensate for a curve.

Staggering the Joints

Joints between rows must be staggered by at least 300mm, ideally more. The classic mistake is ending up with an H-pattern (joints lining up across multiple rows), which weakens the floor and looks wrong. Start alternate rows with the offcut from the previous row's last board — this minimises waste and creates natural staggering.

Aim for end joints to be at least 400mm from the wall and at least 200mm from adjacent row joints.

Cutting Around Obstacles

Door frames: undercut them with an oscillating multi-tool or a hand saw and a scrap of underlay as a depth guide. Slide the board underneath the door frame rather than cutting a notch around it — the result looks far more professional.

Pipes: use a jigsaw or hole saw to cut circular cutouts, then cut the board in two across the centre of the hole so the joint is hidden against the pipe. Seal around pipes with silicone.

Finishing

Remove all spacers once the floor is complete. Fit skirting board or beading to cover the expansion gap. If you're replacing skirting boards, nail or glue them to the wall only — never to the floor. Scotia beading (a small quarter-round trim) pinned to the skirting is the quickest finish. Do not pin it to the floor or the expansion gap is defeated.

Rehang any doors that now need trimming from the bottom — allow at least 5mm clearance over the new floor surface.

Common Mistakes to Avoid

• Not acclimatising the boards: Leave them in the room for 48 hours before fitting. Boards laid cold in an unheated room can expand significantly once the heating comes on.
• Forgetting the expansion gap at every fixed object: Hearths, island units, door frames — all need a gap.
• Over-tapping: Laminate click systems can be damaged by excessive force. If a board won't click, check for debris in the groove rather than hammering harder.
• Mixing batches: Buy 10–15% more than you need from the same batch. Different batches can vary slightly in colour and finish.

Estimated Costs

For a typical 20m² room:

• Mid-range laminate (10mm, AC4): £400–500
• Acoustic underlay: £80–120
• Scotia beading/cover strips: £30–60
• Total materials: £500–680
• Professional fitting (if needed): £200–350 for a room this size

A competent DIYer will typically lay 15–20m² in a day once prep is done. The prep — levelling the subfloor and removing old floor coverings — often takes longer than the laying itself.